class_docstr: This is logical node representing the original node without any modification.
  In assemble, just return the original node along with the physical placement given by multi_model_placement.
code: def assemble(
      self, multi_model_placement: Dict[GraphModelSpace, Device]
  ) -> Tuple[Node, Device]:
      model_id = self.original_node.graph.model.model_id
      new_node = Node(
          self.original_node.graph,
          self.original_node.id,
          f"M_{model_id}_" + self.original_node.name,
          self.original_node.operation,
      )
      return (
          new_node,
          multi_model_placement[self.original_node.graph.model],
      )
  
imports: import copy
  from typing import Dict, Tuple, Any, Type, cast
  from nni.common.device import Device, CPUDevice
  from nni.mutable.utils import uid
  from nni.nas.space import Edge, Graph, GraphModelSpace, Node
  from nni.nas.space.graph_op import Cell, Operation, _IOPseudoOperation
label_desc: Use image node_id 2 for calling the OriginNode obj's underlying member method code with example usage: obj.assemble(multi_model_placement) and returns: new_node,  multi_model_placement